Meanwhile, Fallon's Tonight show will debut Feb. 17, during the second week of the network's Olympics coverage, with actor Will Smith and U2 as guests.

Because of the Olympics coverage, the Tonight show will air at midnight following the nightly games coverage from Sochi, Russia. On Feb. 24, the show will revert to its regular 11:35 p.m. slot.

NBC Entertainment president Robert Greenblatt is hoping to continue the network's relationship with Leno after he leaves late night.

"I would love him to do specials with us, and we've got ideas about other sorts of shows he can host," Greenblatt said Sunday at the Television Critics Association meeting. "As he told me recently, NBC has really been his only home."

He said Leno didn't want to discuss his future until he finished his final week.